Hi Roger
Many Thanks for your reply, I am not fully sure if your machine had the Apex controller which you have removed or had the original electronics in the machine cabinet. I notice Newing Hall show Apex controllers on there current engraving machines but I understand them to be a later model.
Re the "Table" engraver, I will probably keep the table and sell off the other components when I can get the MillGrav running.
One idea I incorporated was to have the surface table long edge skirts machined parallel with a register so they could take ball slides. As a cost saving experiment I machined a flat bottomed 90deg vee groove centrally in a 80 x 20 flat this held a 30 x 30 square rail with the corner removed, held with recessed socked head screws at close centres. Essentially creating a bolt on adjustable vee guide. By shimming the upper and lower faces of the vee groove the rails could be adjusted parallel to the tables surface and to each other. Thats the theory but never put to the task. The gantry "saddle" was to be a machined vee with a 2mm PTFE "gasket" type gib strip. pre loaded again by shimming.